Question: In the German Democratic Republic, who is the head of state?
Paraphrase: Who is the head of state in the German Democratic Republic?
SPARQL (Wikidata):  select distinct ?obj where { wd:Q16957 wdt:P35 ?obj . ?obj wdt:P31 wd:Q5 } 
Answer: Wilhelm Pieck, Egon Krenz, Manfred Gerlach, Erich Honecker, Willi Stoph, Walter Ulbricht, Sabine Bergmann-Pohl